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Abstract: Poster Presentations |

EVALUATION OF THE SIX-MINUTE WALK TEST IN MORBIDLY OBESE PATIENTS FREE TO VIEW

Shirley A. Fabris De Souza, PhD*; Joel Faintuch, MD PhD; Sonia M. Fabris, PT; Ivan Cecconello, MD
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Londrina State University, Londrina, Brazil


Chest


Chest. 2007;132(4_MeetingAbstracts):610a. doi:10.1378/chest.132.4_MeetingAbstracts.610a
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Abstract

PURPOSE: The 6 minute walk test (6 MWT) has been shown to provide a clinically useful index of functional capacity in patients with severe obesity and also cardiovascular diseases. In a prospective study, the aims were to document this determination along with other cardiopulmonary measurements in a morbidly obese population.

METHODS: Patients (n= 47) had age of 39.9 ±11.3 years, 91.5% females, and body mass index was 48.5±9.5 kg/m2. The 6MWD was based on the male and female equations of respectively (7.57x height) –(5.02x age) –(1.76 × weight) –309 and (2.11 × height) –(2.29 × weight) –(5.78 × age) + 667. In addition cardio-respiratory variables, arterial pressure and Borg's fatigue index were registered every minute.

RESULTS: Patients often became exhausted during the test and 6.4% (3/47) did not finish the walk. Aberrations of standard physiologic parameters did not occur. However, distance walked was significantly reduced in comparison with predicted value 419±37 vs 527±81 m (p< 0.05), and actually no patient achieved the normal value.

CONCLUSION: 1)Physiologic limitations of sedentarism were certainly involved, but bone and joint discomfort sometimes interfered as well. 2) Obese patients were unfit in the six-minute walk test. 3) Normal conventional cardiopulmonary determinations didn`t rule out serious deficiencies in performance of the obese population.

CLINICAL IMPLICATIONS: The Six Minute Walk Test (6MWT) is commonly used to assess aerobic capacity in patients with severe obesity and evaluate functional of cardiovascular and respiratory systems.

DISCLOSURE: Shirley Fabris De Souza, None.

Wednesday, October 24, 2007

12:30 PM - 2:00 PM


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